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Vibratory Creep Feed Grinding

振动蠕动进给磨削

基本信息

批准号：
06650158
负责人：
WADA Tadahiro
金额：
$ 0.38万
依托单位：
Nara National Collage of Technology
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650158/
关键词：
Grinding Grinding Wheel Grinding Force Creep Feed Grinding Vibratory Feed Wheel Wear Grinding Fluid Burn Mark

项目摘要

In creep feed grinding, the maximum grain depth of cut becomes smaller, and so the cutting force on an effective edge becomes smaller. Then the loading and grazing often occurs on the working face of the grinding wheel. Because of a long arc of contact, the temperature at the grinding point rises with the increase of cutting force. Consequently thermal damage such as a burn mark is often made on a workpiece. In order to prevent the formation of the burn mark, vibratory creep feed grinding is proposed in this study. The workpiece was forced to vibrate in the table feed direction, that is to say, the frequency fis 30Hz and amplitude 2A is from 0.32 to 1.5mm. In order to clarify the effectiveness of the vibratory creep feed grinding, the grinding performance are experimentally investigated. The main results obtained are as follows : (1) The grinding power in the vibratory creep feed grinding becomes smaller than that in the conventional creep feed grinding. (2) Vibratory creep feed grindi … More ng is effective for the prevention of the burn mark in case of down-cut grinding of SKH4 and SUS304 under the wheel depth of cut 3mm and the table speed 0.179mm/s. However, the wheel wear in vibratory creep feed grinding becomes larger than that in the conventional creep feed grinding. (3) In the vibratory creep feed grinding of SKH4, the burn mark was prevented under the amplitude 2A of 1.0mm or 1.5mm. Moreover the radial wheel wear in the vibratory creep feed grinding of SHK4 with WA abrasive grinding wheel becomes smaller than that in the conventional creep feed grinding, (4) In down-cut vibratory creep feed grinding, more grinding fluid is supplied to the wheel-workpiece contact area than in the conventional creep feed grinding. However, in up-cut vibratory creep feed grinding, the amount of grinding fluid supplied does not increase. (5) In vibratory creep feed grinding, both radial wheel wear and vertical grinding force increase with the increase of the wheel depth of cut under the same metal removal rate. Less

在缓进给磨削中，最大磨粒切削深度变小，因此有效刃上的切削力变小。因此，砂轮工作面经常会发生加载和擦伤。由于接触弧长，磨削点温度随切削力的增加而升高。因此，在工件上经常产生诸如烧痕的热损伤。为了防止烧痕的形成，本研究提出振动缓进磨削。工件被强迫沿工作台进给方向振动，即频率f为30 Hz，振幅2A为0.32 ~ 1.5mm。为了阐明振动缓进磨削的有效性，对磨削性能进行了实验研究。主要研究结果如下：（1）振动缓进磨削比常规缓进磨削的磨削功率小。(2)振动缓进磨 ...更多信息 ng对于SKH 4和SUS 304在砂轮切深3 mm、工作台速度0.179mm/s下切入磨削时防止烧伤痕迹有效。然而，振动缓进磨削中的砂轮磨损比常规缓进磨削中的砂轮磨损大。(3)在振动缓进磨削SKH 4时，振幅2A为1.0mm或1.5mm时，可防止烧伤。WA磨料砂轮振动缓进磨削SHK 4时，砂轮径向磨损量小于常规缓进磨削时的砂轮径向磨损量。（4）下切振动缓进磨削时，砂轮与工件的接触面积比常规缓进磨削时增加。然而，在上切振动缓进磨削中，供给的磨削液的量不增加。(5)振动缓进磨削中，在相同金属去除率下，砂轮径向磨损和垂直磨削力均随砂轮切深的增加而增大。少